I think the mb_lib could be elected for installation. for instance you have to explicit install on windows boxes even with php 5.
<em>@hainn84 74648 wrote:</em><blockquote>yes,i have search on php.net : http://vn2.php.net/manual/en/function.mb-internal-encoding.php and see that function run well in phpversion >= 4.0.6 . but in your case i still don’t understand .</blockquote>
It could be easyly checked with phpinfo.
Bosse
